Mainspring (firearms)
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Mainspring (firearms)
In firearms, the mainspring is a spring in the firing mechanism which stores the energy required to ignite the primer of the cartridge. The mainspring may be called a striker spring on striker-fired firearms, or hammer spring{{Cite patent, number=US8132350B1, title=Hammer spring assembly for a firearm, gdate=2012-03-13, invent1=Alves, inventor1-first=Joseph E., url=https://patents.google.com/patent/US8132350/en on hammer-fired firearms. After the trigger mechanism has been released, the tensioned mainspring will drive the firing pin or hit the firing pin so that it is driven. Mainsprings can come in many shapes, such as a cylindrical spring ( Mosin-Nagant, TT-33, Colt M1911), plate spring (Nagant revolver model 1895, Makarov pistol) or spiral spring ( Kalashnikov). On a number of automatic firearms, the recoil spring may also function as a mainspring ( FN Browning M1900, Degtyaryov machine gun, and some submachine guns). Mainsprings should not be confused with the type of firing p ...
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Trigger Mechanism Bf 1923
Trigger may refer to: Notable animals and people ;Mononym * Trigger (horse), owned by cowboy star Roy Rogers ;Nickname * Trigger Alpert (1916–2013), American jazz bassist * "Trigger Mike" Coppola (1900–1966), American gangster ;Surname * Bruce Trigger (1937–2006), Canadian archaeologist * Damon Trigger (born 1972), New Zealand born former English cricketer * Hannah Trigger (born 1987), Australian snowboarder * Ian Trigger (1938–2010), British actor Technology * Trigger (firearms), a mechanism that actuates the firing of firearms * Database trigger, procedural code that is automatically executed in response to certain events * Dead man's trigger, a safety device that activates safeguards if the operator is incapacitated * Flip-flop (electronics), called a trigger circuit by IBM * Image trigger, a device used in high speed cameras * Schmitt trigger, an electronic circuit Art, entertainment, and media Fictional entities * Trigger (''Only Fools and Horses''), a BBC sitc ...
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M1911 Pistol
The M1911 (Colt 1911 or Colt Government) is a single-action, recoil-operated, semi-automatic pistol chambered for the .45 ACP cartridge. The pistol's formal U.S. military designation as of 1940 was ''Automatic Pistol, Caliber .45, M1911'' for the original model adopted in March 1911, and ''Automatic Pistol, Caliber .45, M1911A1'' for the improved M1911A1 model which entered service in 1926. The designation changed to ''Pistol, Caliber .45, Automatic, M1911A1'' in the Vietnam War era. Designed by John Browning, the M1911 is the best-known of his designs to use the short recoil principle in its basic design. The pistol was widely copied, and this operating system rose to become the preeminent type of the 20th century and of nearly all modern centerfire pistols. It is popular with civilian shooters in competitive events such as the International Defensive Pistol Association and International Practical Shooting Confederation. The U.S. military procured around 2.7 million M1911 and ...
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Slamfire
A slamfire is a discharge of a firearm occurring as a cartridge is being loaded into the chamber. Some firearms are designed to slamfire, but the term also describes a malfunction of self-loading firearms. Shooters accustomed to firearms requiring trigger activation for discharge may be unprepared for a slamfire discharge. Some military firearms are designed to fire from an open bolt condition to avoid unintended discharge of a chambered cartridge cooking off in a gun barrel heated by firing previous cartridges. Activating the trigger of such firearms releases the spring-loaded bolt to move forward stripping a cartridge from the magazine into the chamber. The firing pin impacts the primer as the cartridge is chambered, and the energy released by the discharging cartridge returns the bolt into an open position while ejecting the empty case. Unintentional slamfire More conventional self-loading firearms begin this cycle with a cartridge already in the chamber and await activatio ...
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Degtyaryov Machine Gun
The Degtyaryov machine gun (russian: Пулемёт Дегтярёвa Пехотный, Pulemyot Degtyaryova Pekhotny literally: "Degtyaryov's infantry machine gun") or DP-27/DP-28 is a light machine gun firing the 7.62×54mmR cartridge that was primarily used by the Soviet Union, with service trials starting in 1927, followed by general deployment in 1928. Besides being the standard Soviet infantry light machine gun (LMG) during World War II, with various modifications it was used in aircraft as a flexible defensive weapon, and it equipped almost all Soviet tanks in WWII as either a flexible bow machine gun or a co-axial machine gun controlled by the gunner. It was improved in 1943 producing the DPM, but it was replaced in 1946 with the RP-46 which improved on the basic DP design by converting it to use belt feed. The DP machine gun was supplemented in the 1950s by the more modern RPD machine gun and entirely replaced in Soviet service by the general purpose PK machine gun in t ...
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FN M1900
The FN Browning M1900 is a single action, semi-automatic pistol designed c. 1896 by John Browning for Fabrique Nationale de Herstal (FN) and produced in Belgium at the turn of the 20th century. It was the first production handgun to use a slide. History The design was presented to arms manufacturer FN Herstal in 1898, with production commencing the following year (then under the designation ''Modele 1899''). In 1900, an improved design featuring primarily a shorter barrel and wider grips was introduced as the M1900. These designations were applied retroactively after FN began manufacture of other Browning pistol designs; initially the M1900 was marketed as simply the "Pistolet Browning" (Browning Pistol). Production ceased only 11 years later, with a total of about 700,000+ units having been produced. United States President Theodore Roosevelt owned a mother of pearl-gripped Modele 1899, which he regularly kept on his person and in his bedside drawer. It now resides in the NRA Fi ...
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AK-47
The AK-47, officially known as the ''Avtomat Kalashnikova'' (; also known as the Kalashnikov or just AK), is a gas operated, gas-operated assault rifle that is chambered for the 7.62×39mm cartridge. Developed in the Soviet Union by Russian small-arms designer Mikhail Kalashnikov, it is the originating firearm of the Kalashnikov rifle, Kalashnikov (or "AK") family of rifles. After more than seven decades since its creation, the AK-47 model and its variants remain one of the most popular and widely used firearms in the world. The number "47" refers to the year the rifle was finished. Design work on the AK-47 began in 1945. It was presented for official military trials in 1947, and, in 1948, the fixed-Stock (gun), stock version was introduced into active service for selected units of the Soviet Army. In early 1949, the AK was officially accepted by the Soviet Armed Forces and used by the majority of the member states of the Warsaw Pact. The model and its variants owe their glob ...
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Makarov Pistol
The Makarov pistol or PM ( rus, Пистоле́т Мака́рова, r=Pistolét Makárova, p=pʲɪstɐˈlʲet mɐˈkarəvə, t=Makarov's Pistol) is a Soviet semi-automatic pistol. Under the project leadership of Nikolay Fyodorovich Makarov, it became the Soviet Union's standard military and Militsiya side arm in 1951. Development Shortly after the Second World War, the Soviet Union reactivated its plans to replace the TT pistols and Nagant M1895 revolvers. The adoption of the future AK assault rifle relegated the pistol to a light, handy self-defense weapon. The TT was unsuited for such a role, as it was heavy and bulky. Also, the Tokarev pistols omitted a safety and magazines were deemed too easy to lose. As a result, in December 1945, two separate contests for a new service pistol were created, respectively for a 7.62mm and 9mm pistol. It was later judged that the new 9.2×18mm cartridge, designed by B. V. Semin, was the best round suited for the intended role. The lower p ...
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Nagant M1895
The Nagant M1895 Revolver is a seven-shot, gas-seal revolver designed and produced by Belgian industrialist Léon Nagant for the Russian Empire. The Nagant M1895 was chambered for a proprietary cartridge, 7.62×38mmR, and featured an unusual "gas-seal" system, in which the cylinder moved forward when the gun was cocked, to close the gap between the cylinder and the barrel, providing a boost to the muzzle velocity of the bullet and allowing the weapon to be suppressed (an unusual characteristic for a revolver). In fact, a 38mm long shell covers the whole bullet for this very purpose as well. This way, early Nagant users would avoid dealing with gases of black powder. Its design would inspire the Pieper M1893 carbine and Steyr 1893 revolver. Russian M1895 Léon Nagant and his brother Émile were well known in the Russian Tsar's court and military administration because of the part they had played in the design of the Russian service rifle, the Mosin–Nagant Model 1891. The Nag ...
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TT Pistol
The TT-30,, "7.62 mm Tokarev self-loading pistol model 1930", TT stands for Tula, Russia, Tula-Tokarev) commonly known simply as the Tokarev, is an out-of-production Soviet semi-automatic pistol. It was developed in 1930 by Fedor Tokarev as a service pistol for the Military of the Soviet Union, Soviet military to replace the Nagant M1895 revolver that had been in use since the Russian Empire, though it ended up being used in conjunction with, rather than replacing, the M1895. It served until 1952, when it was replaced by the Makarov pistol. Development In 1930, the Revolutionary Military Council approved a resolution to test new small arms to replace its aging Nagant M1895 revolvers. During these tests, on 7 January 1931, the potential of a pistol designed by Fedor Tokarev was noted. A few weeks later, 1,000 TT-30s were ordered for troop trials, and the pistol was adopted for service in the Red Army. The TT-30 was manufactured between 1930 and 1936, with about 93,000 being ...
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Firearm
A firearm is any type of gun designed to be readily carried and used by an individual. The term is legally defined further in different countries (see Legal definitions). The first firearms originated in 10th-century China, when bamboo tubes containing gunpowder and pellet projectiles were mounted on spears to make the portable fire lance, operable by a single person, which was later used effectively as a shock weapon in the Siege of De'an in 1132. In the 13th century, fire lance barrels were replaced with metal tubes and transformed into the metal-barreled hand cannon. The technology gradually spread throughout Eurasia during the 14th century. Older firearms typically used black powder as a propellant, but modern firearms use smokeless powder or other propellants. Most modern firearms (with the notable exception of smoothbore shotguns) have rifled barrels to impart spin to the projectile for improved flight stability. Modern firearms can be described by their caliber ( ...
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Mosin–Nagant
The Mosin–Nagant is a five-shot, bolt-action, internal magazine–fed military rifle. Known officially as the 3-line rifle M1891 and informally in Russia and former Soviet Union as Mosin's rifle ( ru , винтовка Мосина, ISO 9: ), it is primarily found chambered for its original 7.62×54mmR cartridge. Developed from 1882 to 1891, it was used by the armed forces of the Russian Empire, the Soviet Union and various other states. It is one of the most mass-produced military bolt-action rifles in history, with over 37 million units produced since 1891. In spite of its age, it has been used in various conflicts around the world up to the present day. History Initial design and tests During the Russo-Ottoman War of 1877–1878, Russian troops armed mostly with Berdan single-shot rifles suffered heavy casualties against Turkish troops equipped with Winchester repeating rifles, particularly at the bloody Siege of Pleven. This showed Russian commanders the need to mode ...
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Trigger (firearms)
A trigger is a mechanism that actuates the function of a ranged weapon such as a firearm, airgun, crossbow, or speargun. The word may also be used to describe a switch that initiates the operation of other non-shooting devices such as a trap, a power tool or a quick release. A small amount of energy applied to the trigger leads to the release of much more energy. Most triggers use a small flattened lever (called the ''trigger blade'') depressed by the index finger, but some weapons such as the M2 Browning machine gun or the Iron Horse TOR ("thumb-operated receiver") use a push-button-like thumb-actuated trigger design, and others like the Springfield Armory M6 Scout use a squeeze-bar trigger similar to the "ticklers" on medieval European crossbows. Although the word "trigger" technically implies the entire mechanism (known as the ''trigger group''), colloquially it is usually used to refer specifically to the trigger blade. Most firearm triggers are "single-action", meaning ...
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